/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef LoadableTextTrack_h
#define LoadableTextTrack_h

#if ENABLE(VIDEO_TRACK)

#include "TextTrack.h"
#include "TextTrackLoader.h"
#include <wtf/PassRefPtr.h>
#include <wtf/Vector.h>

namespace WebCore {

class HTMLTrackElement;
class LoadableTextTrack;
class ScriptExecutionContext;

class TextTrackLoadingClient {
public:
    virtual ~TextTrackLoadingClient() { }
    
    virtual void textTrackLoadingCompleted(LoadableTextTrack*, bool /* loadingFailed */) = 0;
};

class LoadableTextTrack : public TextTrack, private TextTrackLoaderClient {
public:
    static PassRefPtr<LoadableTextTrack> create(TextTrackClient* trackClient, TextTrackLoadingClient* loadingClient, const String& kind, const String& label, const String& language, bool isDefault)
    {
        return adoptRef(new LoadableTextTrack(trackClient, loadingClient, kind, label, language, isDefault));
    }
    virtual ~LoadableTextTrack();

    void load(const KURL&, ScriptExecutionContext*);
    bool supportsType(const String&);

private:
    // TextTrackLoaderClient
    virtual bool shouldLoadCues(TextTrackLoader*) { return true; }
    virtual void newCuesAvailable(TextTrackLoader*);
    virtual void cueLoadingStarted(TextTrackLoader*);
    virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed);

    LoadableTextTrack(TextTrackClient*, TextTrackLoadingClient*, const String& kind, const String& label, const String& language, bool isDefault);

    OwnPtr<TextTrackLoader> m_loader;
    TextTrackLoadingClient* m_loadingClient;
    bool m_isDefault;
};
} // namespace WebCore

#endif
#endif
